Should I even add nutrients?

I have been growing from a new setup and the plants are just now in their second week of flower, the soil mix I have them in is:
-2 parts fox farms ocean forest
-1 part cococoir
-1 part peat moss
-1 part coarse perilite


They have been looking really good and this isnt my first grow however this is the first time I haven't started off giving them nutrients right from the get go, some of the larger shade leaves are showing a little yellowing and I want to make sure I get a decent sized harvest like I always have when I pushed nutrients.

This is the schedule I always roughly used before (I don't remember where it's from) and Im not sure if I should just continue without nutrients or if I should try to add some, if I should start at week 6 since my plants are in their second week of flowering and just give them 1/4 or 1/8 str to be safe or what I should do... I'm a little scared to just wing it because theres only 2 plants in flower at the moment.

I would add something like a bloom booster (high PK), such as Awesome Blossoms by Techniflora which is on Amazon, for the duration.



It's not cheap, but is good stuff and lasts a long time.

I would avoid any 'PK boosters' and feed with a veg formula from start to finish.